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115 lines
2.3 KiB
ArmAsm
115 lines
2.3 KiB
ArmAsm
/* x86-64 __mpn_addmul_1 -- Multiply a limb vector with a limb and add
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the result to a second limb vector.
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Copyright (C) 2003-2023 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not,
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see <https://www.gnu.org/licenses/>. */
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#include "sysdep.h"
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#include "asm-syntax.h"
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#define rp %rdi
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#define up %rsi
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#define n %rdx
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#define v0 %rcx
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#ifndef func
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# define func __mpn_addmul_1
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# define ADDSUB add
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#endif
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.text
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ENTRY (func)
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push %rbx
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push %rbp
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lea (%rdx), %rbx
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neg %rbx
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mov (up), %rax
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mov (rp), %r10
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lea -16(rp,%rdx,8), rp
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lea (up,%rdx,8), up
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mul %rcx
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bt $0, %ebx
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jc L(odd)
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lea (%rax), %r11
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mov 8(up,%rbx,8), %rax
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lea (%rdx), %rbp
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mul %rcx
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add $2, %rbx
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jns L(n2)
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lea (%rax), %r8
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mov (up,%rbx,8), %rax
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lea (%rdx), %r9
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jmp L(mid)
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L(odd): add $1, %rbx
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jns L(n1)
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lea (%rax), %r8
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mov (up,%rbx,8), %rax
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lea (%rdx), %r9
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mul %rcx
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lea (%rax), %r11
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mov 8(up,%rbx,8), %rax
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lea (%rdx), %rbp
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jmp L(e)
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.p2align 4
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L(top): mul %rcx
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ADDSUB %r8, %r10
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lea (%rax), %r8
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mov (up,%rbx,8), %rax
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adc %r9, %r11
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mov %r10, -8(rp,%rbx,8)
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mov (rp,%rbx,8), %r10
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lea (%rdx), %r9
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adc $0, %rbp
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L(mid): mul %rcx
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ADDSUB %r11, %r10
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lea (%rax), %r11
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mov 8(up,%rbx,8), %rax
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adc %rbp, %r8
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mov %r10, (rp,%rbx,8)
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mov 8(rp,%rbx,8), %r10
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lea (%rdx), %rbp
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adc $0, %r9
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L(e): add $2, %rbx
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js L(top)
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mul %rcx
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ADDSUB %r8, %r10
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adc %r9, %r11
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mov %r10, -8(rp)
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adc $0, %rbp
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L(n2): mov (rp), %r10
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ADDSUB %r11, %r10
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adc %rbp, %rax
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mov %r10, (rp)
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adc $0, %rdx
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L(n1): mov 8(rp), %r10
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ADDSUB %rax, %r10
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mov %r10, 8(rp)
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mov %ebx, %eax /* zero rax */
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adc %rdx, %rax
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pop %rbp
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pop %rbx
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ret
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END (func)
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